Hui-picture-card does not preload

Hello,

i always get the error that the hui-picture-card in my vertical stack dont exists, when i open on any lovlance page the + add widget, the card immediately loads. but when i reload the page its gone again.

i tried the HACS Lovelance Card Preloader and ad at the top of my raw config this :

preload_cards:
  - hui-picture-card

but this doesnt help, has someone a idea?

here is my complete widget code:

type: vertical-stack
cards:
  - type: horizontal-stack
    cards:
      - type: custom:config-template-card
        entities:
          - sensor.plex_recently_movies_poster_1
          - sensor.neue_filme
          - sensor.plex_recently_movies_play_movie_1
        card:
          type: custom:hui-picture-card
          title: Film 1
          image: ${states['sensor.plex_recently_movies_poster_1'].state }
          tap_action:
            action: call-service
            service: media_player.play_media
            service_data:
              entity_id: media_player.firetv_kueche
              media_content_type: movie
              media_content_id: ${states['sensor.plex_recently_movies_play_movie_1'].state  }
        style:
          top: 44%
          left: 30%
          width: 10%
          border: 2px solid gold

did u add the
thomasloven/lovelace-hui-element ?